EP1379771B1 - Ansaughomogenisiervorrichtung für eine brennkraftmaschine - Google Patents

Ansaughomogenisiervorrichtung für eine brennkraftmaschine Download PDF

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Publication number
EP1379771B1
EP1379771B1 EP02724421A EP02724421A EP1379771B1 EP 1379771 B1 EP1379771 B1 EP 1379771B1 EP 02724421 A EP02724421 A EP 02724421A EP 02724421 A EP02724421 A EP 02724421A EP 1379771 B1 EP1379771 B1 EP 1379771B1
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EP
European Patent Office
Prior art keywords
perforated element
induction regulator
regulator
propeller
induction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02724421A
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English (en)
French (fr)
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EP1379771A1 (de
Inventor
Roger Kennedy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB0109623A external-priority patent/GB0109623D0/en
Priority claimed from GB0114573A external-priority patent/GB0114573D0/en
Application filed by Individual filed Critical Individual
Priority to EP07114472A priority Critical patent/EP1862662A3/de
Publication of EP1379771A1 publication Critical patent/EP1379771A1/de
Application granted granted Critical
Publication of EP1379771B1 publication Critical patent/EP1379771B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M29/00—Apparatus for re-atomising condensed fuel or homogenising fuel-air mixture
    • F02M29/04—Apparatus for re-atomising condensed fuel or homogenising fuel-air mixture having screens, gratings, baffles or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to an induction regulator for an internal combustion engine, according to the preamble of claim 1.
  • An induction regulator is known from UK-A-2099074 which is designed to compensate for irregularities in the supply to and demand for fuel from the engine and thus leads to improved fuel consumption, reduced exhaust pollution, and better fuel atomization/vaporization.
  • this known regulator is adapted to be disposed in the inlet manifold of the engine, downstream of the carburettor and comprises a perforated element allowing the passage of fuel/air mixture therethrough, an open-topped reservoir for retaining excess unvaporized fuel and a pair of mounting straps depending from the perforated element for fixing the regulator within the manifold.
  • the ends of the straps may be bent outwardly at right angles in order to permit them to be clamped between the inlet manifold and the carburettor.
  • the perforated element is disposed at an angle to the straps such that when the regulator is installed the perforated element is disposed at a defined angle to the manifold wall in order to optimize atomization.
  • UK-A-2270952 describes an induction regulator for an internal combustion engine comprising a perforated element for allowing the passage of fuel/air mixture therethrough, at least one open-topped reservoir for retaining excess unvaporized fuel and a closed loop supporting strip coupled to the perforated element for mounting between opposed flanges of the manifold of the engine downstream of the carburettor.
  • Prior art induction regulators suffer from a number of disadvantages. For example, many prior art induction regulators are not sufficiently effective in promoting swirling promotion of the fuel/air mixture when passing therethrough. The performance of some prior art induction regulators is not optimized during engine start up procedure and for the first few minutes thereafter before the engine warms up. Some prior art induction regulators are difficult to fit and seal and some cannot be fitted to a multi-point system.
  • the invention provides an induction regulator according to claim 1.
  • At least one open-topped reservoir for retaining excess unvaporized fuel and means for mounting the regulator in the inlet manifold of an engine, the open-topped reservoir comprising a series of perforations therein.
  • the perforations in the open-topped reservoir enhance the swirling motion of the fuel/air mixture when passing therethrough and over the regulator which, in turn, improves atomization/ vaporization of the fuel and enhances the performance of the engine.
  • the perforations may be made by a mechanical drilling or by chemical application and are preferably provided on two opposed side walls of the open-topped reservoir.
  • the induction regulator according to this second embodiment of the invention further comprises an open-topped reservoir for retaining excess unvaporized fuel.
  • the open-topped reservoir may be provided with a series of perforations therein.
  • the induction regulator when the induction regulator is mounted in the inlet manifold of an internal combustion engine such that the perforated element is tilted at an angle, as is described in GB-A-2270952 , the downwardly tilted side of the perforated element is provided with the skirt of greater height.
  • the top of the skirt effectively remains un-tilted with respect to the inlet manifold. This has the effect of improving the swirling motion of the fuel/air mixture passing through and over the regulator, with consequent improvement in engine performance.
  • an induction regulator for an internal combustion engine, wherein the means for mounting comprising supporting straps secured at one end to the perforated element and comprising at each other end a flange angled with respect to each strap, the length of each strap being selected to be approximately half of the peripheral length of the perforated element.
  • the induction regulator according to this third embodiment of the invention further comprises an open-topped reservoir for retaining excess unvaporized fuel.
  • the open-topped reservoir may be provided with a series of perforations.
  • the induction regulator according to this third embodiment of the invention may also, or instead, be provided with a skirt at least partially surrounding at least a portion of the perforated element, the height of the skirt being greater at one site of the perforated element than at another.
  • the ratio of supporting strap length to perforated element peripheral length has been found to define the optimum position of the regulator within the inlet manifold. This renders the regulator of the invention easier to fit in an optimum fashion than prior art devices.
  • an induction regulator for an internal combustion engine wherein the means for mounting comprising supporting straps secured at one end to the perforated element and having at each other end a flange angled with respect to each respective strap, the flanges being manufactured from a malleable material.
  • the induction regulator according to this fourth embodiment of the invention further comprises an open-topped reservoir.
  • the open-topped reservoir may be provided with a series of perforations.
  • the induction regulator according to this fourth embodiment of the invention may also, or instead, be provided with a skirt at least partially surrounding at least a portion of the perforated element, the height of the skirt being greater at one site of the perforated element than at another.
  • the length of each supporting strap is preferably selected to be approximately half of the peripheral length of the perforated element.
  • This fourth embodiment of the invention has the advantage that, when fitting the regulator in the inlet manifold, the regulator is simply placed on top of the engine gasket or spacer gasket with its uppermost point in line with the forward edge of the butterfly/mono-point injector of the carburettor/mono-point injection body. A small amount of gasket sealant is put around each of the flanges that fill the gasket area.
  • the carburettor /mono-body is then replaced onto the inlet manifold and torqued to the manufactures' specifications. Because the flanges are made from malleable material, the torquing down will cause the material to spread onto the gasket thereby assuring a good seal and preventing air/fuel leakage ether inward or outward.
  • the malleable material is soft copper.
  • an induction regulator for an internal combustion engine wherein the heating means are independent of the temperature of the fuel/air mixture in the internal combustion engine in which the regulator is installed, in use of the regulator.
  • the perforated element may be heated directly, for example by means of direct electrical contact between the perforated element and a battery.
  • the heating may be provided indirectly, for example by electrical connection of a battery with the inlet manifold in which the induction regulator according to this fifth embodiment of the invention is installed, in use of the regulator. This may be advantageous in helping to vaporise any liquid fuel in the inlet manifold.
  • the induction regulator according to this fifth embodiment of the invention further comprises an open-topped reservoir for retaining excess unvaporized fuel.
  • the open-topped reservoir may be provided with a series of perforations.
  • the induction regulator according to this fifth embodiment of the invention may be provided with a skirt at least partially surrounding at least a portion of the perforated element, the height of the skirt being greater at one site of the perforated element than at another.
  • the induction regulator according to this fifth embodiment of the invention may additionally, or instead be provided with supporting straps for mounting the perforated element in the inlet manifold, the supporting straps being secured at one end to the perforated element and comprising at each other end a flange angled with respect to each strap, the length of each strap being selected to be approximately half of the peripheral length of the perforated element.
  • the straps where present may alternatively, or as well, be manufactured from a malleable material such as soft copper.
  • the heating means may be connected to the straps instead of, or in addition to, the perforated element.
  • the regulator can be pre-heated prior to or at engine start-up to optimize performance thereof during the initial stages of engine operation.
  • the heating means comprises electrical heating means.
  • the regulator comprises two perforated elements.
  • a regulator can be placed down stream of each choke of, say, a twin choke carburettor which feeds into a single inlet manifold.
  • the or each perforated element comprises a metal gauze bounded by a frame, the shape of which corresponds with that of the inlet manifold into which the regulator is to be fitted.
  • the frame and perforated element therein are preferably selected for size to leave a peripheral gap between the frame and the inlet manifold when the regulator is mounted therein.
  • the gauze is planar and disposed at an angle to the manifold wall in use of the regulator. The angle may be in the range of from about 13° to about 25° but is preferably about 18° when the regulator is positioned at a bend in the manifold, for example where the inlet gas is changed directly between moving vertically and moving horizontally, as is the case with a down-draft carburettor.
  • the or each open-topped reservoir may comprise a rectangular tank which is secured to or forms part of the frame at the open top is positioned adjacent the gauze on the down stream side thereof.
  • the tank preferably extends across the width of the gauze in a central position leaving unrestricted passage through the gauze both above and below its longitudinal edges.
  • the arrangement is such that unvaporized fuel collects in the tank and, when the engine requires extra fuel it vaporizes from this tank passing initially upstream through the gauze covering the open top of the tank and then down stream through the gauze positioned on either side of the tank.
  • the gauze serves to improve atomization of the fuel/air mixture and, by virtue by the turbulent created, generates a swirling action in the inlet manifold which leads to improved combustion.
  • an induction regulator for an internal combustion engine wherein the propeller may be mounted in the inlet manifold by means of mounting straps secured at one end to the propeller and each other end to the inlet manifold or to an engine gasket in the region thereof.
  • the propeller may be perforated.
  • the propeller may also be heated, directly or indirectly, by heating means which are preferably independent of the temperature of the fuel/air mixture in the internal combustion engine, for example by means of a battery power supply.
  • Rotation of the propeller promotes swirling motion of the fuel/air mixture passing through the inlet manifold and improves engine performance as a result.
  • the propeller may be connected to an electric power supply.
  • the propeller may be driven at any number of different, controlled speeds.
  • the propeller may operate independently in the inlet manifold as an induction regulator, or it may be combined with an induction regulator of the type described, for example, in GB-A-2270952 .
  • the propeller may be secured to the at least one perforated element.
  • an induction regulator for an internal combustion engine wherein the mounting means comprising supporting straps secured at one end to the perforated element and/or the propeller and comprising at each other end a flange angled with respect to each strap, the length of each strap being selected to be half of the peripheral length of the perforated element.
  • the flanges may be manufactured from a malleable material.
  • the regulator comprises two propellers to start with this arrangement a regulator can be placed downstream of each choke of, say, a twin-choke carburettor which feeds into a single inlet manifold.
  • the or each propeller is of metal construction (although other suitable materials, including plastics materials, may be used) and is sized to correspond with the size of the inlet manifold into which the regulator is to be fitted.
  • the size of the propeller is selected to leave a peripheral gap between the propeller and the inlet manifold when the regulator is fitted.
  • the propeller may also be used in an injector system.
  • the propeller can be attached to one or more injectors in such a system to.
  • the perforated element which features in some embodiments of the invention may be sized to leave a peripheral gap between the perforated element and the inlet manifold when fitted.
  • the induction regulator of the invention may conveniently be installed as an integral part of the manufacture of an internal combustion engine. However, it may also be retro-fitted to existing engines. In either case, the induction regulator of the invention may be manufactured as single sealed units to facilitate installation.
  • the induction regulator of the invention is suitable for use in all types of internal combustion engine, including automobile, motorbike and lawnmower engines.
  • FIG. 1 a prior art induction regulator 101 for disposal in the inlet manifold of an engine downstream of a carburettor is shown.
  • the regulator comprises frame 102 which bounds metal gauze 103 and which acts to support gauze 103 around its periphery.
  • Two strips of metal 104 extend from frame 102.
  • Strips 104 are secured at their ends remote from frame 102 to a continuous strip of metal 105.
  • Continuous strips 105 can be clamped between the flanges of the inlet manifold and of the carburettor in use of the regulator.
  • Frame 102 is disposed at an angle to strips 5 and preferably at an angle of about 72°.
  • An open-topped reservoir is secured to frame 102 and its edges surrounding the open top are formed with lip 107 which serves to support gauze 103.
  • Reservoir 106 is elongate and is positioned centrally across the width of gauze 103, between the points where strips connect to frame 102.
  • Gauze 103 extends over the top of reservoir 106.
  • the reservoir serves as a drip tank to catch and retain any unvapourised fuel in the induction mixture.
  • induction regulator 201 for disposal in induction manifold 202 of an engine downstream of a carburettor.
  • Regulator 201 comprises frame 202 which bounds metal gauze 203 and which acts to support gauze 203 around its periphery.
  • Two strips of metal 204 extend from frame 202. Strips 204 can be clamped between the flanges of an inlet manifold and of a carburettor.
  • Open-topped reservoir 205 is secured to frame 202 and its edges surrounding the open top are formed with lip 206 which serves to support gauze 203.
  • Reservoir 205 is elongate and is positioned centrally across the width of gauze 203 between the points were strips 204 connect to frame 202.
  • Gauze 203 extends over the open top of reservoir 205.
  • Reservoir 205 serves as a drip tank to catch and retain any unvapourised fuel in the induction mixture.
  • the side walls of reservoir 205 are provided with a series of perforations 207 which enhance the swirling action generated in the fuel/air mixture as it passes through or over induction regulator 201.
  • induction regulator 301 for disposal in the inlet manifold of an engine downstream of a carburettor.
  • Regulator 301 comprises gauze 303 supported by metal strips 304 and circumferenced by skirt 308.
  • Gauze 303 is tilted with respect to the inlet manifold in use of the regulator and the top of skirt 308 has an even height with respect to the inlet manifold, which improves the swirling action of the fuel/air mixture passing through gauze 303 in use of the device.
  • Skirt 308 may only partially surround perforated element 303, as is shown in Figure 3a.
  • induction regulator 401 for disposal in the inlet manifold of an engine downstream of a carburettor.
  • Regulator 401 comprises frame 402 surrounding gauze 403.
  • Open-topped reservoir 405 is situated beneath gauze 403.
  • Frame 402 supports a pair of metal strips 404 which extend upwardly and somewhat outwardly in use of the device to the extent of about 50% of the circumference of gauze 403.
  • Regulator 501 for mounting in the inlet manifold of an engine downstream of a carburettor.
  • Regulator 501 comprises gauze 503 surrounded by skirt 508 and supported by two metal strips 504 which have opposed supporting lugs 509 made from a mailable material which, in this example, is soft copper.
  • induction regulator 601 for mounting in the inlet manifold of an engine downstream of a carburettor. Induction regulator 601 is connected to electrical heating means 610.
  • induction regulator 701 for disposal in the inlet manifold 702 of an engine downstream of a carburettor.
  • Regulator 702 comprises propeller 703 mounted centrally within inlet manifold 702 by means of mounting straps 704.
  • Propeller 703 is freely rotatable about center pin 705, to which mounting straps 704 are connected.
  • Dotted lines 706 a, b and c indicate the optional presence of a connection of propeller 703 to an electric motor (not shown) for driving propeller 703 independently of the fuel/air mixture passing there against in use of regulator 701.
  • Induction regulator 801 disposed in the inlet manifold 802 of an engine downstream of a carburettor.
  • Induction regulator 801 comprises a propeller 803 mounted beneath perforated plate 807 in inlet manifold 802.
  • Perforated plate 807 may alternatively be a gauze and is preferably made of metal material and supported in the inlet manifold 802 by means of mounting straps (not shown).
  • Perforated plate 807 may be mounted at a tilt inside inlet manifold 802 and may be sized to leave a peripheral gap between perforated plate 807 and inlet manifold 802.
  • Propeller 803 is freely rotatable about central pin 805 which is supported in inlet manifold 802 by means of a spot weld 808 on perforated plate 807.
  • propeller 803 may be mounted by means of mounting straps 804 (indicated in dotted lines in Figure 9).
  • Dotted lines 906 a, b and c indicate an optional variation in which propeller 903 is connected to an electric motor (not shown) for driving rotation of the propeller independently of the fuel/air mixture passing there against.
  • an induction regulator 901 comprising propeller 903 mounted in sheath 909.
  • Sheath 909 can be fitted in around a fuel line (not shown) so that propeller 303 is disposed within the fuel line in use of the regulator.
  • Propeller 303 is freely rotatable about vertical pin 905 which is supported in sheath 909 by horizontal pins 904 spot welded to the wall of sheath 909.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Means For Warming Up And Starting Carburetors (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • General Induction Heating (AREA)

Claims (11)

  1. Induktionsregler für einen Verbrennungsmotor, der Folgendes umfasst:
    mindestens ein perforiertes Element, um den Durchlass eines Kraftstoff-Luft-Gemischs dorthindurch zu ermöglichen und Mittel zur Befestigung des mindestens einen perforierten Elements im Ansaugkrümmer eines Motors, wobei der Induktionsregler des Weiteren Mittel zur Erwärmung des perforierten Elements umfasst, gekennzeichnet durch einen Propeller, der an eine Stromversorgung zum Antreiben des Propellers angeschlossen ist, und
    durch Mittel zur Befestigung des Propellers in dem Ansaugkrümmer des Motors.
  2. Induktionsregler nach Anspruch 1, wobei das Mittel zur Erwärmung direkt mit dem perforierten Element verbunden ist.
  3. Induktionsregler nach Anspruch 2, wobei das Mittel zur Erwärmung indirekt mit dem perforierten Element verbunden ist.
  4. Induktionsregler nach Anspruch 2 oder Anspruch 3, wobei das Mittel zur Erwärmung eine Batteriestromversorgung umfasst.
  5. Induktionsregler nach einem der Ansprüche 1 bis 4, wobei das Mittel zur Erwärmung unabhängig von der Temperatur des Kraftstoff-Luft-Gemischs ist, dass während der Verwendung des Reglers durch den Verbrennungsmotor geleitet wird.
  6. Induktionsregler nach einem der Ansprüche 1 bis 5, der ein Mittel zur Erwärmung des Propellers umfasst.
  7. Induktionsregler nach einem der Ansprüche 1 bis 6, der mindestens einen oben offenen Behälter zur Aufnahme von überschüssigem nicht verdampftem Kraftstoff aufweist.
  8. Induktionsregler nach Anspruch 7, wobei der oben offene Behälter eine Reihe von Perforationen in demselben umfasst.
  9. Induktionsregler nach einem der Ansprüche 1 bis 8, wobei mindestens ein Abschnitt des perforierten Elements mindestens teilweise von einer Einfassung umgeben ist, wobei die Höhe der Einfassung an einer Seite des perforierten Elements größer als an einer anderen ist.
  10. Induktionsregler nach einem der Ansprüche 1 bis 9 für einen Verbrennungsmotor, wobei das Mittel zur Befestigung Haltebänder umfasst, die an einem Ende an dem perforierten Element befestigt sind und an jedem anderen Ende einen Flansch umfassen, der im Verhältnis zu jedem Band abgewinkelt ist, wobei die Länge jedes Bandes so ausgewählt ist, dass sie etwa der Hälfte der Umfangslänge des perforierten Elements entspricht.
  11. Induktionsregler nach einem der Ansprüche 1 bis 10, wobei das Mittel zur Befestigung Haltebänder umfasst, die an einem Ende an dem perforierten Element befestigt sind und an jedem anderen Ende einen Flansch aufweisen, der im Verhältnis zu jedem jeweiligen Band abgewinkelt ist, wobei die Flansche aus einem schmiedbaren Material hergestellt sind.
EP02724421A 2001-04-19 2002-04-19 Ansaughomogenisiervorrichtung für eine brennkraftmaschine Expired - Lifetime EP1379771B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07114472A EP1862662A3 (de) 2001-04-19 2002-04-19 Ansaugregler für einen Verbrennungsmotor

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB0109623A GB0109623D0 (en) 2001-04-19 2001-04-19 An induction regulator for an internal combustion engine
GB0109623 2001-04-19
GB0114573A GB0114573D0 (en) 2001-06-15 2001-06-15 An induction regulator for an internal combustion engine
GB0114573 2001-06-15
PCT/GB2002/001831 WO2002086304A1 (en) 2001-04-19 2002-04-19 An induction regulator for an internal combustion engine

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP07114472A Division EP1862662A3 (de) 2001-04-19 2002-04-19 Ansaugregler für einen Verbrennungsmotor

Publications (2)

Publication Number Publication Date
EP1379771A1 EP1379771A1 (de) 2004-01-14
EP1379771B1 true EP1379771B1 (de) 2007-08-22

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP07114472A Withdrawn EP1862662A3 (de) 2001-04-19 2002-04-19 Ansaugregler für einen Verbrennungsmotor
EP02724421A Expired - Lifetime EP1379771B1 (de) 2001-04-19 2002-04-19 Ansaughomogenisiervorrichtung für eine brennkraftmaschine

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP07114472A Withdrawn EP1862662A3 (de) 2001-04-19 2002-04-19 Ansaugregler für einen Verbrennungsmotor

Country Status (12)

Country Link
US (2) US7171959B2 (de)
EP (2) EP1862662A3 (de)
JP (1) JP4571779B2 (de)
CN (1) CN1311154C (de)
AT (1) ATE371105T1 (de)
AU (1) AU2002255114B2 (de)
CA (1) CA2444667C (de)
DE (1) DE60221978T2 (de)
ES (1) ES2292752T3 (de)
HK (1) HK1066845A1 (de)
MX (1) MXPA03009514A (de)
WO (1) WO2002086304A1 (de)

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RU2688044C1 (ru) * 2018-05-25 2019-05-17 Евгений Степанович Важинский Устройство для получения газовоздушной смеси карбюратора двигателя внутреннего сгорания

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MXPA03009514A (es) 2004-12-06
US20040123847A1 (en) 2004-07-01
JP2004526097A (ja) 2004-08-26
ATE371105T1 (de) 2007-09-15
CN1511224A (zh) 2004-07-07
HK1066845A1 (en) 2005-04-01
DE60221978D1 (de) 2007-10-04
AU2002255114B2 (en) 2007-03-29
WO2002086304A1 (en) 2002-10-31
EP1862662A3 (de) 2010-10-06
DE60221978T2 (de) 2008-05-15
US7171959B2 (en) 2007-02-06
CA2444667C (en) 2009-10-27
ES2292752T3 (es) 2008-03-16
EP1379771A1 (de) 2004-01-14
JP4571779B2 (ja) 2010-10-27
CN1311154C (zh) 2007-04-18
US7451752B2 (en) 2008-11-18
EP1862662A2 (de) 2007-12-05
US20070215129A1 (en) 2007-09-20
CA2444667A1 (en) 2002-10-31

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